Introduction of Instruments

There is an "appropriate" time for students to be introduced to musical instrumentals. This is because at a certain time, children's skills are developed enough to be able to perform and learn new instruments.
Instruments such as the Kazoo and rhythm sticks should be introduced first because they require less fine motor skills and more gross motor skills. Instruments such as the finger cymbals, I think, are sort of a "gateway" instrument that bridges the gap between gross and fine motor skills instruments and should be introduced after kazoos and rhythm sticks. I think that the recorder and xylophone are a little more complicated and deal with fine motor skills so they should definitely be introduced after the other instruments. If a teacher just jumps right in with a recorder, students will feel stressed out and defeated because they have not worked their way up and to spring an instrument that requires such skills on an innocent student is simply not fair to them.